Consider that you intend to play a game of chess with another person and you intend to win. Then, in addition to being able to move the pieces, you can change the shape of the board itself before you even sit down to play. And perhaps the other person has never played a game of chess before, so you rewrite some of the rules of the game. Then you play a game.

Now consider that your opponent is actually many opponents using your apparent opponent as a proxy; who, while remaining invisible, imports rule sets from other games they know better than you and use the board in ways you never imagined. That's a battle space shaped by 5GW.

To build on RevG, a 5GW, chess effectors could also infiltrate the schools and universities and game clubs to discourage good chess learning, or alternatively promote go, bridge or sheepshead instead of chess. When it comes time to play chess for real, nobody is any good, or they don’t want to play at all.